| Megabunus diadema | |
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| Species: | M. diadema
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| Binomial name | |
| Megabunus diadema (Fabricius, 1779)
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Phalangium diadema | |
Megabunus diadema is a species of harvestman distributed in Western Europe, where it has been found in Iceland, Faroe Islands, Western Norway, Great Britain, Western France, Belgium and Northern Spain.[1]
It is commonly found among moss and lichens, and has a cryptic coloration that blends with this habitat, rendering it almost invisible when it is not moving.[2] Its second pair of legs is as long as 35 mm.[3] Its prominent pair of eyes is equipped with a spiny "crown".
M. diadema was shown to feed on chironomid flies.[4]
The gregarines Actinocephalus megabuni and Doliospora repelini (Eugregarinorida), and the mite Leptus beroni were found to parasitize on this species.[5]
During a study of woodland in Scotland, they were found to be most active during March, June to July and December; in montane regions of Wales they only occurred in August, while they were found all year round in English woodland, with a peak from May to August.[6]
The mainly parthenogenetic[1] M. diadema lays three batches of eggs per year, with about 30 eggs per batch that are deposited among leaf litter or on the soil.[7] The larvae, like many in the suborder Eupnoi, have an egg tooth.[8]
Males have 28 chromosomes.[9]